You can manually request that
the JVM perform garbage collection. Make sure that full garbage
collection is necessary before manually selecting it on a server
instance. When you perform garbage collection, the JVM often examines
every living object in the heap.
To request garbage
If you have not already done so, in the Change Center of the Administration Console, click Lock & Edit (see Use the Change Center).
In the left pane
of the console, expand Environment >
On the Summary of Servers page, select the
server instance for which you will request garbage collection.
Monitoring > Performance tab.
Click Garbage Collect.
The Garbage Collect button calls the JVM’s
System.gc() method to perform garbage
collection. The JVM implementation then decides whether or not the
request actually triggers garbage collection.
To activate these changes, in the Change Center of the Administration Console, click Activate Changes. Not all changes take effect immediately—some require a restart (see Use the Change Center).